<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>appendChild（）添加到末尾</title>
</head>
<body>
    <h2>JavaScript中DOM(document)节点</h2>
    <h2> 2. appendChild（）添加到末尾</h2>
    <div id="demo01">
        
    </div>
</body>
</html>